baber/WOPTO huggingface dataset:
Patent GB-1475498-A (GB)
Title: Optical fibres and optical fibre preform
IPC: G02B6/44
Filed: 1973-08-21
Abstract: In the process of the principal patent, the interior wall of a glass tube is covered by at least one glass layer of higher refractive index than that of the tube, thus forming the core of the optical fibre. In the present process, the inner wall of a glass tube (11) of silicon dioxide is coated with a layer (10) of a dopant of germanium dioxide or germanium-dioxide-containing material which is converted on heating into a glass layer of higher refractive index than that of the tube, and a mixed composition of dopant and silicon dioxide, where the coating material is deposited by a reaction in which hydrogen and compounds thereof are excluded. <IMAGE>
Patent GB-1095278-A (GB)
Title: Improvements in and relating to spectators terraces
IPC: E04H3/12
Filed: 1965-09-14
Abstract: 1,095,278. Stands for spectators. H. MOELLER. Sept. 14, 1965 [Sept. 15, 1964], No. 39164/65. Heading E1A. A terrace 6 for spectators is provided with members 12 which may be displaced from the positions shown in full lines to those shown in dotted lines whereby they may serve as. seats or intermediate standing steps. The members 12 may be Secured to the terrace 6 as shown, be selectively clipped thereto or adjustably slidably positioned therein, see Figs. 4-8 (not shown).
Patent GB-836039-A (GB)
Title: Improvements in or relating to the concentration of mineral substances
Inventor: MERRE MARCEL DE
IPC: C22B34/24
Filed: 1956-12-24
Abstract: Tantalum and niobium compounds in metallurgical by-products, such as slags resulting from the smelting of tin, leadcopper or iron ores, are concentrated by growing crystals of the spinel type, by slowly cooling the molten primary material and then separating the crystals by physical methods such as crushing followed by treatment in heavy liquid media.  In an example quoted, a slag containing Nb2O5 2.5% and Ta2O5 2.5% was heated to 1550 DEG C., cooled slowly to 950 DEG C. during 180 hours, quenched in water and crushed to 65 mesh (Tyler). After separating the Nb/Ta compounds by means of a dense liquid, the concentrate obtained contained 22% of (Ta, Nb)2O5.
Patent GB-1049678-A (GB)
Title: Magnetic device for performing complex logic functions
IPC: G06F7/38
Filed: 1963-10-04
Abstract: 1,049,678. Parallel adders. BURROUGHS CORPORATION. Oct. 4, 1963 [Oct. 25, 1962], No. 39220/63. Heading G4A. A simultaneous parallel binary adder uses a magnetic core to realise each term in the equations for the sum digits, a number of inhibit windings threading a core being each supplied with the inverse of a variable of the term, so that the core may only be set when all such terms are present, thus realising an AND function. In Fig. 4 (not shown), addend and augend A, B are presented to logical circuits DR and DK which generate (in inverse form) the exclusive OR and AND functions R and K respectively. Ki thus represents the generated carry term for denomination i, and Ri the " transit carry" term. Cores 10-19 each derive one term of one of the carry bits; for example core 15 derives the generated carry in the second denomination, core 14 the carry generated in the first denomination and transmitted by the second, and core 13 the carry K0 supplied by control pulse generator 50 and transmitted by denominations 1 and 2. Thus the outputs from amplifiers 40-13 represent the true carries; similarly the outputs from 44-47 represent the exclusive OR sum terms to which these carries can be added in a further single step in the exclusive OR adder. Multiplication by repeated shifting and addition according to multiplier bits is described.
Patent GB-363513-A (GB)
Title: Improvements in or relating to means for use in conjunction with the printing mechanism of weighing apparatus for preventing a printing operation being effected except when the apparatus is in equilibrium
IPC: G01G23/18
Filed: 1930-12-31
Abstract: 363,513. Weighing-apparatus. AVERY, Ltd., W. & T. and TIMSON, W., Soho Foundry, Birmingham. Dec. 31, 1930, No. 39241. Addition to 338,996, [Class 143, Weighing-apparatus]. [Class 143.] Printed records, apparatus for giving. -The means claimed in the parent Specification for preventing a printing o p e ration being effected except when the apparatus is in equilibrium is modified by providing the oscillatory member 8 (vibrated by a dashpot when the weighing mechanism moves) with a plurality of slots 8a, 8b, 8c interconnected by necks which must be in absolute register with the path of the projection 4c of the printing lever 4a during a printing operation before the printing lever can be actuated and through each of which necks the projection must pass before a correct printed record can be obtained. As the projection 4c passes through the neck 8e the chart is gripped in known manner to hold it during the printing operation. The printing handle 4b is yieldingly connected to the main portion 4a and carries a toothed member 6 so that if undue pressure is applied to the handle the lever bends and the teeth on the member 6 engage a fixed stop 7a and prevent violent forces being transmitted to the oscillatory member 8.
Patent GB-1036181-A (GB)
Title: Improvements in and relating to tolerance rings
Inventor: FEARNS STANLEY
IPC: F16D1/08
Filed: 1961-11-02
Abstract: 1,036,181. Securing pulleys, bearing races &c. on shafts; bearings. GEORGE ANGUS & CO. Ltd. Oct. 25, 1962 [Nov. 2, 1961], No. 39250/61. Headings F2A and F2U. A tolerance ring for securing pulleys on shafts, mounting bearing races &c., comprises a ribbon 5, Fig. 2 (not shown), of springy steel formed with transverse corregations 9, Fig. 4 (not shown), and thickenings 6 at its two edges to limit the radial compression to which the ring may be subjected. The thickenings may be made by a single fold 6, Fig. 2 (not shown), a double fold 7, Fig. 3 (not shown), or folded tabs 8, Fig. 4 (not shown), at the edges of the ribbon, or may be made by a separate thickening strip, such as a U-section edgeembracing strip, applied to the edges. Alternatively the ring may be made from metal strip which is thicker along the edges than at the centre. A limited amount of play may be provided between the thickenings and a surrounding hub &c. and the shaft 1. Fig. 1 (not shown) illustrates a known form of tolerance ring of uniform thickness, received in a groove in a shaft.
Patent GB-335474-A (GB)
Title: Improvements relating to electric time fuses for projectiles
IPC: F42C11/06
Filed: 1929-12-23
Abstract: 335,474. Rheinische Metallwaarenund Maschinenfabrik. June 14, 1929, [Convention date] Projectile fuzes.-Relates to fuzes comprising two oppositely charged condensers e, f in series with an electric detonator h and a resistance i in shunt across one condenser f, the resistance causing a leakage of the potential of one condenser f and therefore a potential to rise across the circuit of the detonator, which is fired when this potential reaches a predetermined value. According to the invention, the time action is varied by varying the relative initial voltage of the two condensers, for example by charging the condenser e at a fixed voltage and the condenser f at an adjustable voltage from a potentiometer P, or by adjusting both voltages. A spark-gap device g in the detonator circuit determines the potential required before the detonator circuit can operate.
Patent GB-1441432-A (GB)
Title: Automatic analyzing apparatus
IPC: G01N35/00
Filed: 1973-08-14
Abstract: 1441432 Metering liquid NIHON DENSHI KK 14 Aug 1973 [15 Aug 1973 (3)] 39508/73 Heading B8N [Also in Division G1] A sample measuring valve comprises (Fig. 3) rotatable member 17 between and in sliding contact with upper and lower member 18, 19, the valve members being of polytetrafluorethylene resin, borosilicate glass or ruby, rotatable member 17 having ten accurately machined holes of equal volume through it, and upper and lower members 18, 19 each having two throughways, one for flow of reagent to wash out a metered aliquot of sample from one of the measuring holes and the other for flow of cleaning solution through an adjacent measuring hole. The valve members are assembled as in Fig. 2, spring-loaded ball 182 bearing on the upper part of cylinder 180 which houses member 18 and rotatable member 17 supported in yoke 193 being moved through Geneva gear 196, bevel gears 199, 201 and motor 203. A similar, distribution valve (Fig. 5, not shown) has a rotor member and upper and lower fixed member of polytetraflurorethylene resin or ruby. The upper member has a circular channel on its inner face and two throughways, one communicating with the circular channel, the lower member has a plurality of throughways and the rotor member has two throughways, one of which is slanted and communicates with the second throughway in the upper member. In use, sample is taken in through the second throughway in the upper member and cleaning fluid through the first and hence through the circular channel.
Patent GB-1497020-A (GB)
Title: Dental stomatoscope
IPC: A61B1/253
Filed: 1976-09-23
Abstract: Provided in the area of the mirror plate (24) is a slot-shaped air outlet opening (28) having a maximum inside width of 0.2 mm. Compressed air emerges through this air outlet opening and flows in a laminar fashion approximately parallel to the mirror surface and prevents a deposition of particles thereon as well as the formation of a mist. <IMAGE>
Patent GB-1374245-A (GB)
Title: Electronic photoflash
IPC: H01H51/28
Filed: 1971-08-24
Abstract: 1374245 Photo-flash control circuit PONDER & BEST Inc 24 Aug 1971 [24 Aug 1970 23 Sept 1970 8 March 1971 9 April 1971 11 June 1971] 39704/71 Heading G2A A flash limiting circuit is arranged to terminate discharge through a flash-tube 3 without wasting the charge still remaining on the storage capacitor 1. In Fig. 1, a capacitor turn off circuit 8, 10 is connected in parallel with tube 3 and a thyristor 6, closing a camera synch, contact 301 turns on thyristor 6 to discharge capacitor 1 through tube 3. A photo-electrically controlled integrating circuit 203, 204 turns on a thryristor 10 whereby a reverse current flows through and blocks thyristor 6 to deionize the tube. Fig. 2 (not shown), includes an additional capacitor (19) to accelerate the blocking of the thyristor 6. Fig. 2 also includes a "flash ready" indicator lamp (14). In Fig. 8 a parallel switch 85 is closed to short out tube 3 and the resulting current surge from capacitor 1 sets up magnetic fields in coil springs 86 sufficient to separate contacts 87 of a series switch 82'for a time sufficient for tube 3 to deionize. Fig. 9 (not shown) shows an alternative series switch in which a capacitor (93) discharges through a relay coil to hold the relay contact (91) open whilst the tube deionizes.
Patent GB-890515-A (GB)
Title: Preventing odours in filamentary or sheet material treated with thermosetting aldehyde resins
IPC: D06M15/263
Filed: 1958-12-09
Abstract: The formation of undesirable odours which occurs when natural and synthetic textile materials in the form of filaments, fibres, yarns and woven and non-woven fabrics, e.g. cotton, wool, viscose rayon, nylon and linen, are treated with thermosetting aldehyde resins to improve their dimensional stability, crush and wear resistance, durability and appearance, is avoided by a process comprising the steps of applying the resin to the material, curing the resin, impregnating the material with a compound supplying HSO3- ions at any stage in the treatment from application of the resin until after curing and drying the material at an elevated temperature in the presence of the ions, the amount of the compound used being sufficient to react with all free and potentially free aldehyde in the material and varying between 0.01 mols and 1 mol per mol of aldehyde in the resin when said compound is applied after curing and being at least one mol per mol of aldehyde in the resin when the compound is applied prior to curing.  The compound supplying HSO3- ions may also function as a catalyst to cure the resin and may be used alone or in admixture with other catalysts, e.g. ammonium sulphate, chloride or phosphate, amine hydrochlorides such as 2-methyl-2-amino-1-propanol hydrochloride, zinc chloride, sulphate, nitrate or fluoborate and magnesium chloride.  Suitable compounds supplying HSO3- ions which are preferably applied in aqueous solution having a pH of 4-8, are sodium metabisulphite, water-soluble salts of sulphurous acid, e.g. lithium, sodium, potassium, rubidium, caesium, magnesium, beryllium, calcium, zinc and aluminium sulphites and bisulphites, ammonium bisulphite, sulphurous acid per se or sulphur dioxide in solution.  Specified resins are condensation products of formaldehyde with urea, ethylene urea, melamine, dicyandiamide, phenols, ketones, thiourea and guanidine, methylated urea-formaldehyde, methylated melamine formaldehyde and alkyl-substituted ethylene urea - formaldehyde resins, 1, 3 - dimethylol - 5 - methylperhydrotriazone, resins based on acetaldehyde, benzaldehyde and butyraldehyde, modified glycol acetal-formaldehyde and pentaerythritol acetal-formaldehyde resins and mixtures thereof, with or without the addition of epoxy resins, natural and synthetic rubbers based on butadiene or acrylate homopolymers, copolymers or terpolymers.  The material may be dried and the resin cured by heating to 250 DEG F.-325 DEG F. for 1/2 -3 minutes.  The solution of the compound supplying HSO3- ions may also contain a textile softener, e.g. a polyethylene emulsion, and a surface active agent, e.g. an alkylphenoxy polyethoxyethanol or a sodium alkylaryl sulphonate. Specifications 439,294, 475,422, 502,856, 593,111 and 702,975 are referred to.
Patent GB-1073178-A (GB)
Title: Optical system for colour television scanners
IPC: H04N9/09
Filed: 1964-09-30
Abstract: 1,073,178. Colour television flying-spot scanners. FERNSEH G.m.b.H. Sept. 30, 1964 [Oct. 2, 1963; July 11, 1964], No. 39726/64. Heading H4F. In a colour television flying-spot scanner in which an objective lens 52 images a raster traced upon the fluorescent screen of a scanning cathode-ray tube 51 in the plane of a colour transparency 54, and in which a plurality of optical paths form images of the stop 53 of the objective lens 52 in the planes of adjustable stops 64, 74, 84, 94 associated with photoelectric converter devices 65, 75, 85, 95, the apertures of the adjustable stops are so chosen as to produce a maximum visual signal-to-noise ratio in the resultant colour television image. The light transmitted by the colour transparency is divided by a partially-transparent neutral grey reflector 61 and dichroic mirrors 71 and 81 and passed by way of mirrors 62, 72 and 82 to photo-cells 65, 75, 85 and 95 which yield the luminance signal and red, blue and green colour signals respectively. Lens 52 is arranged to have as large an aperture as possible and its stop 53 is imaged in planes in front of the photo-cells by condenser lenses 63, 73, 83 and 93. In the optical path which primarily determines the resolution of the television image, i.e. the luminance channel or the green channel when a separate luminance channel is not used, the maximum aperture of its adjustable stop is so chosen that the common objective 52 attains its optimum resolution. The stop apertures in the other optical paths are chosen larger, preferably corresponding in one path at least to the maximum numerical aperture of objective 52. The stops may comprise linear iris diaphragms which are coupled together so that the established ratio of the apertures remains constant when the stops are adjusted. When the scanner is operating in accordance with the N.T.S.C. system, the operating ratios are 4: 3: 2 for green-to-red-to-blue. A common stop may be additionally provided in the optical path for the colour signals which may be adjusted independently and simultaneously with the luminance stop.
Patent GB-1161312-A (GB)
Title: Fixation Implants for use in Hip Surgery
Inventor: BALL KENNETH
IPC: A61F2/30
Filed: 1965-09-17
Abstract: 1,161,312. Fixing fractures. NATIONAL RESEARCH DEVELOPMENT CORP. 14 Sept., 1966 [17 Sept., 1965], No. 39826/65. Heading A5R. A fixation implant for use in hip surgery comprises a plate for attachment to the shaft of the femur and a blade inclined to the plate for insertion into the neck of the femur, the blade being adapted to receive, when in position on the neck of the femur, one end of a post inserted inwardly and downwardly through the greater trochanter, whereby the post, when Ibeazing at its other end aginst the outer region of the trochanter, transmits to the implant the force exerted by the gluteal muscles on the greater trochanter. The displacement osteotomy implant 1 of Fig. 1 has a blade 2 for insertion into the neck 3 of the femur and a plate 4 4 for attachment to the shaft 5 of the femur. The blade 2, which has a tri-fin form and is tapered, has a threaded hole into which is screwed post 9, which is threaded at both its ends. A nut 10 is screwed on to the upper end of the post 9 and 'bears on the greater trochanter 7 through a washer 1.1. Plate 4 is attached to the shaft 5 of the femur by means of screws inserted through slots 14 and holes 16. That portion 6 of the implant 1 which connects the blade 2 and the plate 4 is bent backwards from the plate 4 to give the correct alignment. In the case of an implant for use in the fixation of sub-trochanteric fractures (Fig. 5, not shown), the portion (6) is not bent backwards, since the upper part of the' femur and the shaft 5 of the femur are not required to be off-set in this fixation..
Patent GB-894542-A (GB)
Title: Improvements in or relating to means for heating the interior of a vehicle
Inventor: WALL ALAN JAMES
IPC: B60H1/00
Filed: 1959-11-24
Abstract: 894,542. Ventilating passenger vehicles. CLAYTON DEWANDRE CO. Ltd. July 8, 1960 [Nov. 24, 1959], No. 39862/59. Class 137. Relates to a system for heating the passenger space 7 of vehicles, e.g. coaches including a fan for forcing air over a radiator 10 supplied with engine cooling water and valves operated by the temperature of the space 7 to recirculate air over the radiator when such heating is needed; to force fresh air over the radiator and into the space 7 when some heating is needed; and, when no heating is needed, to extract air from the space and exhaust it to atmosphere through the radiator, ventilating air flowing into the space through roof vents. According to the invention, an additional valve 11 responsive to engine cooling water temperature is disposed in the air supply. As shown in Fig. 3, the system is inoperative and the fan (not shown) draws air through inlet 2 and trunking 3, 4 to radiator 10 and exhausts it to atmosphere through outlet 22. Until the radiator temperature reaches a certain level, however, the thermally-actuated valve 11 remains closed and, when opened, is varied in position to maintain a constant air temperature downstream of the radiator. To start the system, switch 20 is closed and, if the space temperature be low enough, thermal elements therein maintain micro-switches 16, 17 in the position of Fig. 3 so that coils 18, 19 are energized to move through fluid-pressure means valves 9, 14 to their other positions, Fig. 4. Air from the passenger space then passes through opening 8, ducts 3, 4, the radiator and opening 5 back into space 7. When the space temperature is raised to a certain level, one thermal element operates switch 16 so that coil 18 is de-energized and valve 9 is moved to its original position allowing fresh air to pass into ducts 3, 4 through inlet 2 and then into space 7 through the radiator, Fig. 5. When no heating is required, both switches 16, 17 are operated so that coils 18, 19 are respectively energized and de-energized to set the valves 9, 14 as shown in Fig. 6. Air is then abstracted from space 7 through opening 8, ducts 3, 4 and radiator 10 and exhausted to atmosphere, the space 7 being ventilated by replacement air entering through roof vents.
Patent GB-1498713-A (GB)
Title: Process for the preparation of diaryl carbonates
IPC: B01J31/02
Filed: 1975-10-01
Abstract: 1498713 Diaryl carbonates BAYER AG 1 Oct 1975 [4 Oct 1974] 40122/75 Heading C2C Diaryl carbonates are prepared by reacting an aromatic monohydroxy compound with phosgene under elimination of hydrogen chloride, in the presence of a catalytic quantity of a basic nitrogen compound in which the nitrogen atom is contained in a 5- or 6-membered aromatic ring and which does not have any other functional groups which form bonds with the carbonate or phosgene under the reaction conditions, or a salt thereof, or an adduct thereof formed under the reaction conditions. Preferred aromatic monohydroxy compounds are phenol, o-, m- and p-cresol, or o-, m- and p-isopropyl phenol, optionally substituted by halogen or alkoxy, monohydroxy naphthalenes, anthracenes, phenanthrenes or 5 to 6 membered heterocyclic radicals optionally condensed or substituted with carbocyclic radicals. Preferred aromatic heterocyclic bases are pyridine, quinoline, isoquinoline, picoline, acridine, pyrazine, pyridazine, pyrimidino or the corresponding benzo-fused compounds, oxazine, thiazine or triazine or the corresponding benzo-fused compounds.
Patent GB-1414962-A (GB)
Title: Ventilators
IPC: F24F7/06
Filed: 1971-08-26
Abstract: 1414962 Ventilators CENTRI-VAC Ltd 27 Nov 1972 [26 Aug 1971 23 Feb 1972] 40174/71 and 8431/72 Heading F4V [Also in Division F1] An air exhaust ventilator comprises an elongate housing having a longitudinally extending channel or abutment for receiving an edge of a pane of glass or other panel, at least one air inlet and one air outlet, and at least one motor driven centrifugal fan impeller 124 mounted within the housing within a portion thereof which is of involute form. In the form shown, the fan housing is secured to frame elements 112, 110 which are fixed to the window pane and window frame respectively. The rear of the housing is formed by a clip on cover 150 which is louvred or includes reticulated grilles. The fan housing is formed in two clipped together sections (126, 128, Fig. 3). The or each air inlet and/or outlet includes a pivotally mounted flap which is controlled by the air pressure produced by the fan or simultaneously by means of a cord operable over-centre pivoted spring device (Fig. 7) which also operates a fan motor control switch. The ventilator is made of aluminium or plastics extrusions, or moulded products.
Patent GB-1532759-A (GB)
Title: Production of monocrystalline layers on substrates
IPC: H01L21/208
Filed: 1977-09-29
Abstract: 1532759 Simultaneous ion bombardment and vapour deposition SIEMENS AG 29 Sept 1977 [30 Sept 1976] 40461/77 Heading C7F A monocrystalline layer is produced by vaporizing a material 10 and vapour depositing on a substrate e.g. Si or foil while simultaneously bombarding the substrate surface with ions 12 e.g. ions of the material 10 accelerated by potential source 8 to a Kinetic energy of at least 10 keV the ion current produced in the substrate being such that the vaporization rate plus the rate of atomization of the substrate caused by the ion bombardment is less than the rate of deposition of the vaporized particles and the ions. The substrate may be subjected to heating below 400C, to an electric field using electrode 13 and to mechanical stress by stretching.
Patent GB-945312-A (GB)
Title: Method of producing pig iron or ferrous alloys in a blast furnace
IPC: C21B5/00
Filed: 1960-11-24
Abstract: A blast furnace process comprises adding a highly reducing gas, i.e. a gas consisting of (nCO+mH2), produced at 1325-1600  DEG C. by reforming pure oxygen and fuel oil in the blast furnace and simultaneously adding oxygen to the blast either in the tuyeres or directly at high speed into the combustion zone, the coke ratio being reduced in a proportion of 1.6 to 2.2 parts coke for one part of fuel oil while the blowing rate per minute is maintained. The reducing gas may be added at the level of the plastic seam through funnel-shaped recesses in the bosh or through one or more of the blast tuyeres which may or may not be cut off from the blast supply.  The fuel and oxygen may be preheated. Specification 778,057 is referred to.